Feather, a free Monero desktop wallet

Co-Authored-By: tobtoht <thotbot@protonmail.com>

src/utils/networking.cpp

@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright (c) 2020, The Monero Project.
+
+#include <QtCore>
+#include <QObject>
+#include <QNetworkAccessManager>
+#include <QNetworkReply>
+
+#include "utils/utils.h"
+#include "utils/networking.h"
+
+UtilsNetworking::UtilsNetworking(QNetworkAccessManager *networkAccessManager, QObject *parent) :
+        QObject(parent),
+        m_networkAccessManager(networkAccessManager) {}
+
+void UtilsNetworking::setUserAgent(const QString &userAgent) {
+    this->m_userAgent = userAgent;
+}
+
+void UtilsNetworking::get(const QString &url) {
+    QNetworkRequest request;
+    request.setUrl(QUrl(url));
+    request.setRawHeader("User-Agent", m_userAgent.toUtf8());
+
+    QNetworkReply *reply;
+    reply = this->m_networkAccessManager->get(request);
+    connect(reply, &QNetworkReply::finished, std::bind(&UtilsNetworking::webResponse, this, reply));
+}
+
+QNetworkReply* UtilsNetworking::getJson(const QString &url) {
+    QNetworkRequest request;
+    request.setUrl(QUrl(url));
+    request.setRawHeader("User-Agent", m_userAgent.toUtf8());
+    request.setRawHeader("Content-Type", "application/json");
+
+    return this->m_networkAccessManager->get(request);
+}
+
+QNetworkReply* UtilsNetworking::postJson(const QString &url, const QJsonObject &data) {
+    QNetworkRequest request;
+    request.setUrl(QUrl(url));
+    request.setRawHeader("User-Agent", m_userAgent.toUtf8());
+    request.setRawHeader("Content-Type", "application/json");
+
+    QJsonDocument doc(data);
+    QByteArray bytes = doc.toJson();
+    return this->m_networkAccessManager->post(request, bytes);
+}
+
+void UtilsNetworking::webResponse(QNetworkReply *reply) {
+    QByteArray data = reply->readAll();
+    QString err;
+    if (reply->error()) {
+        err = reply->errorString();
+        qCritical() << err;
+        qCritical() << data;
+        if (!data.isEmpty())
+            err += QString("%1 %2").arg(err).arg(Utils::barrayToString(data));
+    }
+    reply->deleteLater();
+
+    if(!err.isEmpty())
+        emit webErrorReceived(err);
+    else
+        emit webReceived(data);
+}
+
+QString UtilsNetworking::validateJSON(QNetworkReply *reply){
+    QList<QByteArray> headerList = reply->rawHeaderList();
+    QByteArray headerJson = reply->rawHeader("Content-Type");
+    if(headerJson.length() <= 15)
+        return "Bad Content-Type";
+    QString headerJsonStr = QTextCodec::codecForMib(106)->toUnicode(headerJson);
+    int _contentType = headerList.indexOf("Content-Type");
+    if (_contentType < 0 || !headerJsonStr.startsWith("application/json"))
+        return "Bad Content-Type";
+    QByteArray data = reply->readAll();
+    if(!Utils::validateJSON(data))
+        return "Bad or empty JSON";
+    return "OK";
+}